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POReplace a newline character stored in an array of Strings
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  1. POReplace a newline character stored in an array of Strings
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    copied!<blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/513832/how-do-i-compare-strings-in-java">How do I compare strings in Java?</a> </p> </blockquote> <p>Consider the following 2D array of Strings a[5][5],</p> <p>I store three values in the first three blocks in the array "a". When I print my array, I get the following output.</p> <pre><code>ABC null DEF null </code></pre> <p>These values are present in a file and I retrieve the values and store them in an array of strings.</p> <p>The file ("file.txt")looks like this,</p> <pre><code>A B C D E F </code></pre> <p>Here is my code,</p> <p>Declaration:</p> <pre><code>static String [][] a= new String [4][4]; public static String newline = System.getProperty("line.separator"); private static int i,j; </code></pre> <p>Main code:</p> <pre><code>i=j=0; FileInputStream fin; fin = new FileInputStream("file.txt"); DataInputStream in = new DataInputStream (fin); BufferedReader br = new BufferedReader (new InputStreamReader (in)); while((c = (char)br.read()) != (char)-1) { if (c != ' ' &amp;&amp; c != (char)'\n') { a[i][j] = Character.toString(c); j++; } else if (c == '\n') { i++; j = 0; } } for (int i=0;i&lt;5;i++) { for (int j=0;j&lt;5;j++) { if (newline.equals(a[i][j])) { mainArray[i][j] = null; } } } </code></pre> <p>Here is how I print my array,</p> <pre><code> for (int i=0;i&lt;5;i++) { for (int j=0;j&lt;5;j++) { System.out.print(a[i][j]); } System.out.println(""); } </code></pre> <p>My desired output should be,</p> <pre><code>ABCnullnull DEFnullnull </code></pre> <p>Is there a better way to work on this problem??</p>
 

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